# SDR DXTA2025100205149

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 30, 2025
- Submitted: October 2, 2025
- Operation: Air carrier
- Aircraft: [N852QS](https://openairdocs.org/aircraft/N852QS), registered now
- Make and model: Textrn TEXTRON700
- Aircraft serial: 7000102
- Aircraft time: 1,918 hours, 1,132 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Control Valve
- Part number: 39987
- Part serial: 0242
- Condition: Defective
- Location: Zone 700
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2025100205149

## Discrepancy

WHILE TAXING OUT AND APPLYING THE BRAKES THE AMBER "BRAKE 50% DEGRADED" CAS MESSAGE DISPLAYED EVERY TIME WE APPLIED THE BRAKES. IT WOULD DISAPPEAR WHEN BRAKES WERE RELEASED. ALL BRAKE PAD PINS ARE STICKING OUT PLENTY. CORRECTIVE ACTION: REPLACED AFT BRAKE CONTROL VALVE REF CESSNA 700 AMM 32-41-35. OPS CHECK GOOD

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